Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow Information

The following table provides information regarding the net changes in components of operating assets and liabilities:

	Year Ended December 31,
	2015			2014			2013
(Increase) decrease in:
Accounts receivable	$	99,384		$	95,014		$	(96,300	)
Inventories	3,811			38,501			1,720
Deferred charges	(11,916		)	(8,935		)	—
Other current assets	6,417			62,305			(39,170		)
Increase (decrease) in:
Accounts payable	(101,581		)	(73,307		)	41,718
Accrued liabilities	9,257			(35,624		)	45,846
Net changes in components of operating assets and liabilities	$	5,372		$	77,954		$	(46,186	)

Payments of interest and commitment fees, net of amounts capitalized, were $86.8 million, $74.8 million and $49.7 million during the years ended December 31, 2015, 2014 and 2013, respectively. We capitalized interest of $17.1 million, $13.8 million and $13.3 million during the years ended December 31, 2015, 2014 and 2013.

During the years ended December 31, 2015, 2014 and 2013, we paid taxes of $0.9 million, $0.8 million and $0.6 million.

At December 31, 2015, 2014 and 2013, we had incurred liabilities for fixed and intangible asset additions totaling $68.6 million, $61.2 million and $52.5 million, respectively, which had not been paid at the end of the year. Therefore, these amounts were not included in the caption “Payments to acquire fixed and intangible assets” under Cash Flows from Investing Activities in the Consolidated Statements of Cash Flows.

At December 31, 2015 and 2014, we had incurred liabilities for other asset additions totaling $0.3 million and $9.4 million that had not been paid at the end of the year, and, therefore, were not included in the caption "Other, net" under Cash Flows from Investing Activities in the Consolidated Statements of Cash Flows.

During the year ended December 31, 2015, as a result of our Enterprise acquisition, we acquired the 50% ownership interest in each of CHOPS and SEKCO as previously held by Enterprise, resulting in 100% ownership interest by us in each of these subsidiaries. As a result, we recorded a one time $332 million non-cash gain from the step up in basis in our historical 50% ownership interest in each of CHOPS and SEKCO to fair value (resulting from the fair value assigned to the 50% ownership interest in each of CHOPS and SEKCO that we acquired from Enterprise, as derived from the preliminary purchase price allocation). This also results in the consolidation of CHOPS and SEKCO by us, resulting in the inclusion of the operating assets and liabilities on our Consolidated Balance Sheet. As 50% of the operating assets and liabilities of CHOPS and SEKCO were based on our historical interest with no cash impact, these amounts relating to our historical interest were not included in net changes in components of operating assets and liabilities in the Consolidated Statements of Cash Flows.